#include <ftw.h>
#include <getopt.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>


int do_depth;
int do_chdir;
int do_phys;

struct option options[] =
{
	{ "depth", no_argument, &do_depth, 1 },
	{ "chdir", no_argument, &do_chdir, 1 },
	{ "phys", no_argument, &do_phys, 1 },
	{ NULL, 0, NULL, 0 }
};

const char *flag2name[] =
{
	[FTW_F] = "FTW_F",
	[FTW_D] = "FTW_D",
	[FTW_DNR] = "FTW_DNR",
	[FTW_NS] = "FTW_NS",
};


int cb (const char *name, const struct stat *st, int flag, struct FTW *f)
{
	printf ("base = \"%.*s\", file = \"%s\", flag = %s",
			f->base, name, name + f->base, flag2name[flag]);
	if (do_chdir)
	{
		char *cwd = getcwd (NULL, 0);
		printf (", cwd = %s", cwd);
		free (cwd);
	}
	printf (", level = %d\n", f->level);
	return 0;
}

int main (int argc, char *argv[])
{
	int opt;
	int r;
	int flag = 0;
	mtrace ();

	while ((opt = getopt_long_only (argc, argv, "", options, NULL)) != -1)
		;

	if (do_chdir)
		flag |= FTW_CHDIR;
	if (do_depth)
		flag |= FTW_DEPTH;
	if (do_phys)
		flag |= FTW_PHYS;

	r = nftw (optind < argc ? argv[optind] : ".", cb, 3, flag);
	if (r)
		perror ("nftw");
	return r;
}

